Electric-cord connecter



Jan. 11 1927. 1,613,647v

` G. DAVIES ET AL ELECTRIC CORD CONNECTER- Filed Sept. 14, 1925 All,

ll-NewYorm k 9mm www.

Patented Jan. l1, 1927.

A UNITED STATES I PATENTl oFF ".7 'I 1,613,647 Ica.

GILBERT DAVIES' AND ALFRED GHARLES MIRES. 0F MONTREAL, QEBEC, CANADA. I

ELECTRIC-conn CONNECTER.

-Application led September 14, 1925. Serial No. 56,280.

The invention relates to an electric cord connecter plug, as describedin the present specification and illustrated in the" accompanyingdrawings that form part of the same.

The invention consists essentially of the novel features .ofconstruct-ion pointed out vbroadly and specifically in the claims fornovelty following a description in detail of an acceptable form of theinvention.

The objects of the invention are to facilitate the handling of lamps,tools,` utensils and other articles energized through the flowing ofelectric current in wires enclosed in insulation and commonly termedelectric cords; to avoid the twisting of said cords and the ultimatedislocation of the wires and often the short circuiting of theconnections; to eliminate the troubles incident to the making ot'connections by inexperienced persons particularly in households; tofurnish a plug of reasonable dimensions and applicable to any kind ofcasing already preparedin the tool or utensil or light or separatedtherefrom; to supply this plug ata price'notmateriall7 advanced ascompared with conventiona plugs; and generally to provide an eiicientserviceable and durable rotary plug. l

In the drawings Figure 1 is a side elevation of the plug, as it appearsin its individual casing.

Figure 2 is a longitudinal sectional view of the invention asillustrated in Figure 1.

Figure 3 is a perspective detail of one half of the shell.

Figure 4 is -a perspective detail of the other half of the shell.

Figure 5 is a perspective detail of the rotary `contact core.

Like numerals of reference indicate corresponding parts in the variousligures. Referring to the drawings, the fibre core 10 is formed with thecentral bore 11 arid the reduced threaded ends 12 and 13 and theoppositely reduced sides14 and 15 of the body 16, the side 14 slopinginwardly from one `end 17 of the body 16 to the other end 18 and theside 15 sloping from the end 18 to the end 17 said sloping sides at theend hav ingthe recesses 19 and 20.

The rotary ring contacts 21 and 22 are respectiveljv screwed on to theends 12 and 13 and abut the ends 17 and 18 of the body 16 respectivelyforming open spaces on the contacts at the recesses 19 and 20 for thescrew holes 23 and 24 adapted to receive the screw binding 'posts 25 and26.

The wires 27 and 28 from the cords are attached to the posts 25 andv 26respectively and of these Wires the wire 27 extends into the bore 11 andpasses through the oriice 29 into the recess 19 and so around the post25 and the wire 28' extends into the bore 11 and passes through theorifice 30 into the recess 2() and so on to the post 26, thus yprovidinga constant connection from the electric cord to the rotary contactsrespectively, the other end of the cord being connected to the light,utensil or tool. Y.

The stationary contacts 31 and 32 are rigidly secured to the shells 33and 34 at opposite ends respectively and riveted and connected to theinwardly offset connecter bars 35 and 36' countersunk in the fibreshells 33 and 34 and flush with the periphery thereof.

The contacts 3l and 32 form a lining piece atone end of each of theshells 33 and 34 and are flangedto form the stops 37 and 38. f

The clips 39 and 40 are also riveted to the contacts 31 and 32 and inuse embrace the rotary contacts 21 and 22, the latter turning freely insaid contacts 31 and 32.

The shells 33 and 34 are inserted in the casing 41, which has at one enda permanent head 42 with the bar slots 43 and 44 through which theconnecter bars35 and 36 pro'ject, and at the other end a screw cap 45with the central cord hole 46 through which the electric cordsextend tothe translating device.

The translating device, light, utensil, tool orv other article, may formthe casing for the shells 33 and 34 quite readily by having acorrespondin recess.

In the operat1on of thisinvention the connecters are inserted in thecontacts of the wall or other connection cr tothe .contacts of thetranslating device and-this brings the shell parts Vin permanentassociation during the connection. In this position the rotarythebinding posts connecting them to the wires of the cord jolning the mainworking 4circuit to the translating device, the said cord may turnfreely. without affecting the same as'the rotary contacts turn withevery movement,

What we claim is Y 1. In an electric cord connecter plug, a rotor ofinsulating material having reduced reduced ends and having binding poststherein, a split shell and fixed contacts secured thereto having flangesforming stops at opposite ends of the shell pieces for said ringcontacts respectively and bearings for the latter and clip extensionsembracing the said ring contacts, and connecters riveted to said ringcontacts through said shell pieces. c

2.' In an electric cord connecter plug, a rotor of fibre having reducedthreaded ends and reduced sloping sides from either end respectively andrecesses at the ends of said slopes communicating vwith a central borering contacts secured 011 said reduced ends and having binding poststherein and a split shell having connecters extending therefrom I andcontacts rigidlyl secured with said connecters and forming bearings andstops for -said rotor and ring contacts. ends and sides, ring contactssecured on said 3. In an electric cord connecter plug, a

rotor formed of fibre and ring contacts and having a central bore andbinding posts recessed in the body and screwed in the ring contacts,y afibre shell in two parts, one part having a lining contact at one endflanged and secured to said part with a retaining clip and a connecterbar offset at the end beyond the shell part and the other part having asimilar lining contact at the other end likewise secured to a retainingclip and `offset connecter and a casing containing and holding saidshell parts together.

Signed at Montreal, Canada, this 27th day of August 1925. n

GILBERT DAVIES. v ALFRED CHARLES MIRES.

